In a high availability (HA) environment, all systems, including the enterprise database, must be duplicated to prevent a single point of failure.

When moving to an HA environment, the database that tracks the Lotus Notes Traveler device state information and metadata is moved from a local database on the Lotus Notes Traveler to an enterprise database that resides on a separate server. If only a single enterprise database server is installed, it would become a single point of failure. When the enterprise database is unavailable, Lotus Notes Traveler is not functional until the enterprise database is recovered or a new instance of the database is created. Recovering takes time and will impact the serviceability and productivity of your company .

To avoid these possibilities, you should ensure the enterprise database infrastructure has its own High Availability capability as well.

Lotus Notes Traveler supports IBM DB2 for Linux, UNIX, and Windows and Microsoft SQL Server. The following table lists the specific versions currently supported. Before installing Lotus Notes Traveler and an associated enterprise database, check the current requirements.

64-bit version recommended. A limited entitlement to IBM DB2 9.7.0.4 Workgroup Server Edition is included with the Lotus Notes Traveler 8.5.3 Upgrade Pack 1 release. This limited entitlement is provided for customers who want to deploy a Lotus Traveler High Availability server and elect to use this entitled DB2 version as their RDBMS solution. The DB2 entitlement may be used for no purpose other than the support of Lotus Notes Traveler.

Microsoft SQL Server Enterprise Edition 2008 SP1 CU1 or higher

64-bit version recommended.

Microsoft SQL Server Enterprise Edition 2008 R2 SP1 CU1 or higher

64-bit version recommended.

For more information about DB2 installation, configuration, and high availability setup, see the IBM Redbooks publications:

There are various methods to create an HA instance of Microsoft SQL server depending on version of SQL Server installed and the underlying OS. See the Microsoft documentation that best suits your installation on specific instructions.